{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x86ecf0af772abb2b926695d2cb664936b5ddbc6b93b4c0a696281cc155c05dd5",
    "signature": "0x91968686091e95173f3c88dcbdc7c921f7cd383e07b0073e4a3b98f5f33bb08a0184046d3e79ece14c059cc6f290d1d383770d7f3864db82d502c765282b1a2e1b",
    "signer": "0x6988ABAFC4bDb977521bf90412539FB94CfB6D91",
    "userId": "498974169"
  }
}