{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2783ec65d9b37a9689ea09e8ebafaf61cf21bbf4d3e8ec620caa17b1a0c529a5",
    "signature": "0x28e10c8af3e39d3c0ed2b2868e3e353d1a3307c35b4c57a2e30abb7b1166f255252b63d2b5add00381dc6276d4efff821e57af71e1f4376b4b6b9ed56b0e954f1c",
    "signer": "0x7289Df7B0b4193E11a867d13571EFd39A24cc69E",
    "userId": "765957572"
  }
}