{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x071e6ee95c3b32c9dc064bf4c4a617046171ec1bbbbd25ecb5a510755d1f1ee8",
    "signature": "0x71b55d1444a2d34535d206b311338d5551437e68a585c7a5a76408982b080a61625e6a5e9bb6e25db70c8fcb3042a8127b348d039ba4ff692f03a1636a908f7f1b",
    "signer": "0x57e1121F22B3722Da80a80F4a32a643BE4943bE9",
    "userId": "774961868"
  }
}