{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64693",
    "entityType": "User",
    "nonce": "0xf8f47037afd7af4657a2a90789795b63a049e70253cf693a9357a1aa4dd56004",
    "signature": "0xe514adec257040320bc7653f163242b07294d77683dc518f4ed9a1baf8dfea064ee941ad6cc6fbfcc1764b857c3c38e496c53ffaf2a8c8d09db144d4fc2f28e91c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}