{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210463",
    "entityType": "User",
    "nonce": "0x1839a4e4dc1972776238933605dea922fab340a1bfeeccbe34edc15ad2a52944",
    "signature": "0xa280b82f77769332c48fbe4011fa58416649b1ba0560808bdba5a601f64c2e876aed378280008fd97f9cd4216dd80205fb5a54c0e02a44d6bf362a979bcecf021b",
    "signer": "0xCf51c0CB439FF3aED8c04d4676b43572a8F8FB93",
    "userId": "763179319"
  }
}