{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2ef46a2c8b289e7ba06325e63ef3987306a12d13510edc7a24e59fb0ea2fbdc0",
    "signature": "0x664bee7bcdadd11a053d02679d40bf44c0858872c7a0b5835b1ece2d2cb66c451c4a8227f91828fe29a2b03d96deb18ca56ed40955d0cfb5d043a583ce3deae91b",
    "signer": "0x1265f0C62f63e733ef6f5A73800dAc6eb1dAA462",
    "userId": "551524903"
  }
}