{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x01ddcbfad683d2c877d363df42e072dd91c6778054ea11478e0cd4233f81d53b",
    "signature": "0x295acdd3598fefabc0d33a69487745f79216d6a01d1a6435002790b6623e4f06519df1aa195b33e74168edf77221950fb0edca9251dd164a9cde32fe4ee9a86e1c",
    "signer": "0x7A83d995A610C8d6B07E7371618bC2FcaE2442d7",
    "userId": "976310341"
  }
}