{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "191921",
    "entityType": "User",
    "nonce": "0xeda12a0328ed2e7eb4e3863aaa4eceee2c8c6e012f0f6d0d705ee1de0bd84b91",
    "signature": "0x43c26545e2b6806abdf7f527dc5e3a55cd43e2c318494a2c404dc84d01cddf1821d0b53f908875c9be3ebce7f02f98d4801d9d47642d80b2d338d8220b73ae4e1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}