{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "647391197",
    "entityType": "User",
    "nonce": "0xce0699f0f7480b3afc8cce5e503dc8c605ed2812da0003caf4a5dd60c786326b",
    "signature": "0x1fde251642c05f26f351de0d6d7183494e0a2b11552a2dcd9dbdd0ddb88b7b1e10372185b34231fd8a65dc24809dbc0dab89603e4d0044ba77269c52ac10dcb51c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}