{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499757493",
    "entityType": "User",
    "nonce": "0xe771a1892afb501a0301ca8c37561c0f0e9dcdd9bd3abee24f3d7ff944f610c3",
    "signature": "0x50e54c891ffd723a853ec12f21eac5795b1098b3386cd0b3f61b3a5aa96602515b83a136dba7f9e1266925cddfabf07763e83faf6ea5497884cd2490692947a51b",
    "signer": "0xbcF27CD259a120e92577BC7a7EB95670b3A0E2fA",
    "userId": "105402635"
  }
}