{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299555",
    "entityType": "User",
    "nonce": "0x0b53cabe69cf6a743759560db4874ce7b26890d0f4a1b6d08a24d57cb9ae84eb",
    "signature": "0xf71394640c56857de341c4ae33b635ef6bc9753a16f672317293e59f0a9ed7633ced96395aa3fd18cc7aafd500bb4e2cf000f91235118cbf683a4a4945e535731c",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}