{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "874058807",
    "entityType": "User",
    "nonce": "0xd599e2fe4951138cd770bc5391012b40c141926554c06f880b5556419e4d8bf3",
    "signature": "0xf4d5c62a98b631e717032558af01be145976f56c03f609b78b243b99baff821e1674fa6f7a73bfc7e0bbdca31cc878deabccbd84770dada17e405cdb61d784451b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}