{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7c135cccf1f58c244af4c255605b35ef5d7c06f47261fe9ea289c31478f2dede",
    "signature": "0xa13fb1b535ed5f59d308976e143c82e3d539d888cc5b3c19a7da0a14c991e9ae71cf93bd7330caccd49c537d48fbf29bd194d48cfad11800607d2c39a42025a61c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}