{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "906687997",
    "entityType": "User",
    "nonce": "0xe5f01b619b6af506dbe372326fe064b9ef5fb0163d452b6d94256202e274baf7",
    "signature": "0xea65aa3dd1104ff43dd70324bf3da4d5c39e868fcbd44816d913b4e5634bec90558c2b2e989a0e76bd8f8bfbb5efd45e30dde0cb7105aaa6d7c432d951024ef01c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}