{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xaa8e7590776c74940525a759c787d639347b93fedfe184643982921fc53bfca9",
    "signature": "0x26f6a8b8dccf7ff14a681a64a9442e7aab28607881e02424b3f609d7e5e7752e45a95cb4c5edb7566b00912bbbb3cb9343fbfb612b07c7a2043a98410f8c44371c",
    "signer": "0x9D360ECE27645E249fbb45fC03AeF953A81031Dc",
    "userId": "579726392"
  }
}