{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x991d8516468078723bbff85f9950f665ab78770a66572dad6444827159f19def",
    "signature": "0xfa11fde89c811169effc8d2e74cbc440ad81547b7da2b7dd1b206029c023860a26236227ce4245d35c5e4d3b10bab1a4130b07c9063eedbf795bae465bb049c71b",
    "signer": "0x1e81c053e3e89097fe34793A52289e05548CaC3c",
    "userId": "276450600"
  }
}