{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2d456701fe20fcbe3e23e4d5541d9164e3bb2abf2c7afdb256b24e5552071d76",
    "signature": "0x7119b0985d5896a4f99823294298ee4ad69628839f9bf09f4a26462a9145366a2b65acb91133489ab86a12aacd135deb72d4b11532065374cafa3f1f6d74cd951b",
    "signer": "0x2dE0fBa28eB08e93130FD9206EDD888b60f7694a",
    "userId": "74259061"
  }
}