{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383103",
    "entityType": "User",
    "nonce": "0xce63c9b84ee93f78ad4c3ee7d19f8de29a4b2a58b97fca50cee03517817c1e8c",
    "signature": "0x214bfc3be218be3a29e64a39c88be6bb37192d072a67822c2abfd975cb94d2e8040c41cea86dcedfc6661976ddb4aafc8b37c46e3c24902005d08303a8c6da2d1c",
    "signer": "0x54843d003DCBeEC3EAA58af1cD2BFaf52E4d065e",
    "userId": "106509815"
  }
}