{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100259",
    "entityType": "User",
    "nonce": "0xc92ef2494e899b3fed538282f740863aa0be7e5e4af22aa23e98f4b5fb8462b7",
    "signature": "0xa7fd1fae8acce31e2c2d4b8c240f006a3022b5d0ef5aa01bc9d077d9370c9d587d2af866ab9dda53dc4a4fdbe7a7e23500b394b21de9307e53f28b820ae61a211c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}