{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450",
    "entityType": "User",
    "nonce": "0x461d022068afe01151807ad9a5dea212f71fd36a5cdcd1287d1364bf7f40b861",
    "signature": "0xce0455337ba83511cdac0baa901548e8d5c377ad12da55a2c9fc3388b7f0a31318aab90f9dd18c59db661337cabdc307572b4735e97d4b6eaf748385d41c00341c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}